Richmond, TX has a population of 11,939 and is the 3,429th largest city in the United States. The population density is 2,942 per sq mi which is 2935% higher than the Texas average and 3148% higher than the national average. The median age in Richmond is 35 which is approximately 1% higher than the Texas average of 34. In Richmond, 53% of the population over 15 years of age are married, 54% speak English and 46% speak Spanish. 67% of Richmond residents were born in Texas, 10% were born out of state, 0% were born outside of the United States and 22% were foreign born.